| Lane | Swimmer | Team | Place | Time |
|---|---|---|---|---|
| 1 | 12 | 49.64 | ||
| 1 | 11 | 48.81 | ||
| 1 | 19 | 55.06 | ||
| 2 | 21 | NS | ||
| 2 | 13 | 49.88 | ||
| 2 | 16 | 51.36 | ||
| 3 | 14 | 50.26 | ||
| 3 | 7 | 46.58 | ||
| 4 | 4 | 42.15 | ||
| 4 | 5 | 44.87 | ||
| 4 | 2 | 40.74 | ||
| 5 | 3 | 41.23 | ||
| 5 | 8 | 46.97 | ||
| 5 | 1 | 39.46 | ||
| 6 | 6 | 45.55 | ||
| 6 | 9 | 47.37 | ||
| 6 | 15 | 50.27 | ||
| 7 | 21 | DQ | ||
| 7 | 10 | 47.56 | ||
| 7 | 17 | 52.99 | ||
| 8 | 20 | 56.05 | ||
| 8 | 18 | 53.14 |